US7149564B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic analysis in virtual endoscopy
Assignee: Wake Forest University
•
Filing: 2002-03-28
•
Granted: 2006-12-12
•
Expires: 2022-03-28
Abstract
Abstract A computer system and a computer-implemented method are provided for interactively displaying a three-dimensional rendering of a structure having a lumen and for indicating regions of abnormal wall structure. A three-dimensional volume of data is formed from a series of two-dimensional images representing at least one physical property associated with the three-dimensional structure. An isosurface of a selected region of interest is created by a computer from the volume of data based on a selected value or values of a physical property representing the selected region of interest. A wireframe model of the isosurface is generated by the computer wherein the wireframe model includes a plurality of vertices. The vertices are then grouped into populations of contiguous vertices having a characteristic indicating abnormal wall structure by the computer. The wireframe model is then rendered by the computer in an interactive three-dimensional display to indicate the populations of abnormal wall structure.
Inventors
- 👤 David J. Vining
- 👤 Gordon W. Hunt
- 👤 David K. Ahn
- 👤 David R. Stelts
- 👤 Yaorong Ge
- 👤 Paul F. Hemler
- 👤 Tiffany W. Salido
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:24
CPC Classifications
G; G06; G06T; G06T7/00; G06T7/0002; G06T7/0012; A; A61; A61B; A61B5/00; A61B5/103; A61B5/107; A61B5/1076; G06T15/00; G06T15/08; G06T17/00; G06T17/20; G06T7/10; G06T7/11; G06T7/155; G09; G09B; G09B23/00; G09B23/28; G09B23/285; G06T2207/00; G06T2207/10; G06T2207/10072; G06T2207/10081; G06T2207/20; G06T2207/20004; G06T2207/20012; G06T2207/30; G06T2207/30004; G06T2207/30028; G06T2207/30032; G06T2207/30061; G06T2207/30064; Y; Y02; Y02A; Y02A90/00; Y02A90/10; Y10; Y10S; Y10S128/00; Y10S128/92
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
85 words
A method for interactively displaying three dimensional structures comprising the steps of: providing a three-dimensional volume of data representing at least one physical property associated with a three dimensional body; isolating a selected region of interest from the volume of data based on selected values of the physical property representing the selected region of interest; rendering the isolated region of interest as a surface rendered image in an interactive three-dimensional display; and displaying a volume-rendered image adjoining the surface-rendered image in an interactive three-dimensional display.
Claim 2
Independent Claim
85 words
A method for interactively displaying three dimensional structures comprising the steps of: providing a three-dimensional volume of data representing at least one physical property associated with a three dimensional body; isolating a selected region of interest from the volume of data based on selected values of the physical property representing the selected region of interest; rendering the isolated region of interest as a surface rendered image in an interactive three-dimensional display; and displaying a volume-rendered image adjoining the surface-rendered image in an interactive three-dimensional display.
Claim 3
Dependent Claim
23 words
The method as recited in claim 1 including displaying at least one planar image through the surface-rendered image of the interactive three-dimensional display.
Claim 4
Independent Claim
85 words
A method for interactively displaying three dimensional structures comprising the steps of: providing a three-dimensional volume of data representing at least one physical property associated with a three dimensional body; isolating a selected region of interest from the volume of data based on selected values of the physical property representing the selected region of interest; determining an arbitrarily oriented cross-sectional area of the selected region of interest; and rendering the arbitrarily oriented cross-sectional area of the isolated region of interest in an interactive three-dimensional display.
Claim 5
Independent Claim
85 words
A method for interactively displaying three dimensional structures comprising the steps of: providing a three-dimensional volume of data representing at least one physical property associated with a three dimensional body; isolating a selected region of interest from the volume of data based on selected values of the physical property representing the selected region of interest; determining an arbitrarily oriented cross-sectional area of the selected region of interest; and rendering the arbitrarily oriented cross-sectional area of the isolated region of interest in an interactive three-dimensional display.
Claim 6
Independent Claim
92 words
An apparatus for automatic analysis in virtual endoscopy for interactively displaying a three-dimensional rendering of an anatomical structure having a lumen, the apparatus comprising: a computer-controlled device to acquire images of selected body organs, and a renderer to produce three-dimensional renderings of images of the anatomical structures, the renderer adapted to incorporate a surface rendering of an organ into a volume rendering of the surrounding anatomy using texture memory to achieve a combined surface/volume rendering, wherein the three-dimensional renderings are interactive to enable the display of movement about the rendered anatomical structure.
Claim 7
Independent Claim
92 words
An apparatus for automatic analysis in virtual endoscopy for interactively displaying a three-dimensional rendering of an anatomical structure having a lumen, the apparatus comprising: a computer-controlled device to acquire images of selected body organs, and a renderer to produce three-dimensional renderings of images of the anatomical structures, the renderer adapted to incorporate a surface rendering of an organ into a volume rendering of the surrounding anatomy using texture memory to achieve a combined surface/volume rendering, wherein the three-dimensional renderings are interactive to enable the display of movement about the rendered anatomical structure.
Claim 8
Independent Claim
106 words
An apparatus for automatic analysis in virtual endoscopy for interactively displaying a three-dimensional rendering of an anatomical structure, the apparatus comprising: a computer-controlled device to acquire images of selected body organs, and a renderer to produce three-dimensional renderings of anatomical structures of the images, the renderer adapted to incorporate a surface rendering of an organ into a volume rendering of the surrounding anatomy using texture memory to achieve a hybrid rendering effect, wherein the surface rendered organ may be highlighted in the context of the volume-rendered surrounding anatomy, and wherein the three-dimensional renderings are interactive to enable the display of movement about the rendered anatomical structure.
Claim 9
Independent Claim
106 words
An apparatus for automatic analysis in virtual endoscopy for interactively displaying a three-dimensional rendering of an anatomical structure, the apparatus comprising: a computer-controlled device to acquire images of selected body organs, and a renderer to produce three-dimensional renderings of anatomical structures of the images, the renderer adapted to incorporate a surface rendering of an organ into a volume rendering of the surrounding anatomy using texture memory to achieve a hybrid rendering effect, wherein the surface rendered organ may be highlighted in the context of the volume-rendered surrounding anatomy, and wherein the three-dimensional renderings are interactive to enable the display of movement about the rendered anatomical structure.
Claim 10
Independent Claim
70 words
An apparatus for automatic analysis in virtual endoscopy for interactively displaying a three-dimensional rendering of an anatomical structure, the apparatus comprising: a computer-controlled device to acquire images of selected body organs, and a renderer to produce in a display window multiplanar views of anatomical structures of the images which include at least one of orthogonal and oblique views that are presented simultaneously with a surface-rendered organ and surrounding volume-rendered anatomy.
Claim 11
Independent Claim
70 words
An apparatus for automatic analysis in virtual endoscopy for interactively displaying a three-dimensional rendering of an anatomical structure, the apparatus comprising: a computer-controlled device to acquire images of selected body organs, and a renderer to produce in a display window multiplanar views of anatomical structures of the images which include at least one of orthogonal and oblique views that are presented simultaneously with a surface-rendered organ and surrounding volume-rendered anatomy.
Claim 12
Dependent Claim
33 words
The apparatus according to claim 6 wherein the renderer produces a simultaneous display of multiplanar views centered on a point that changes in response to user selected movement within the rendered anatomical structure.
Claim 13
Independent Claim
96 words
A method for interactively displaying three dimensional structures comprising the steps of: providing a three-dimensional volume of data representing at least one physical property associated with a three dimensional body; isolating a selected region of interest from the volume of data based on selected values of the physical property representing the selected region of interest; generating a wireframe model of a selected surface of the isolated region of interest, the wireframe model comprising a plurality of polygons and a plurality of vertices associated with the polygons; and rendering the wireframe model in an interactive three-dimensional display.
Claim 14
Independent Claim
96 words
A method for interactively displaying three dimensional structures comprising the steps of: providing a three-dimensional volume of data representing at least one physical property associated with a three dimensional body; isolating a selected region of interest from the volume of data based on selected values of the physical property representing the selected region of interest; generating a wireframe model of a selected surface of the isolated region of interest, the wireframe model comprising a plurality of polygons and a plurality of vertices associated with the polygons; and rendering the wireframe model in an interactive three-dimensional display.
Claim 15
Dependent Claim
27 words
The method according to claim 8 comprising the step of determining a connectivity matrix to provide information regarding the connectivity between the vertices of the wireframe model.
Claim 16
Dependent Claim
36 words
The method according to claim 8 comprising the step of re-ordering the polygons into a sequence corresponding to the order in which the polygons would be encountered while traversing the wireframe model along a selected direction.
Claim 17
Dependent Claim
31 words
The method according to claim 8 comprising the step of calculating the wall thickness at a vertex on the wireframe model from the volume data of the isolated region of interest.
Claim 18
Dependent Claim
45 words
The method according to claim 8 comprising the step of determining a local curvature at a selected vertex by summing the scalar distance between each of a selected number of levels of adjacent vertices and the plane perpendicular to the normal of the selected vertex.
References Cited (Backward Citations)
US4243652A
Cited
US4367216A
Cited
US4391280A
Cited
US4630203A
Cited
JPS6113374A
Cited
US4737921A
Cited
US4710876A
Cited
US4729098A
Cited
US4719585A
Cited
EP0231950A2
Cited
US4874362A
Cited
US4751643A
Cited
US4791567A
Cited
US4821213A
Cited
US4879668A
Cited
US4823129A
Cited
US5245538A
Cited
US4831528A
Cited
US5170347A
Cited
US5038302A
Cited
US5023072A
Cited
US4958932A
Cited
US4993415A
Cited
US5056020A
Cited
US4984157A
Cited
US4985856A
Cited
US4985834A
Cited
US5265012A
Cited
US5229935A
Cited
US5006109A
Cited
US5187658A
Cited
WO1991014397A1
Cited
US5299288A
Cited
US5412763A
Cited
US5047772A
Cited
US5127037A
Cited
US5204625A
Cited
US5270926A
Cited
US5166876A
Cited
EP0514587A2
Cited
US5623586A
Cited
US5313567A
Cited
US5345490A
Cited
US5261404A
Cited
US5283837A
Cited
GB2265775A
Cited
US5295488A
Cited
US5322070A
Cited
US5807256A
Cited
WO1994024640A1
Cited
US5740802A
Cited
US5581671A
Cited
US5365927A
Cited
WO1995020270A1
Cited
US5630034A
Cited
US5458111A
Cited
US6272366B1
Cited
WO1996013207A1
Cited
US5782762A
Cited
US6909913B2
Cited
US5920319A
Cited
US6694163B1
Cited
US6366800B1
Cited
US6083162A
Cited
US5611025A
Cited
US5742291A
Cited
US5971767A
Cited
WO1998016903A1
Cited
US5986662A
Cited
US5891030A
Cited
US6246784B1
Cited
US5957138A
Cited
US6389157B2
Cited
US6813373B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2009-12-11 | 2010-06-12 | 2010-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-12-11 | 2014-06-12 | 2014-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-12-11 | 2018-06-12 | 2018-12-12 | $7700.00 | Window Closed / Lapsed |